Here's the differences between the gaskets:
Cosworth a single fold "Stopper Type"
Mazworx/PE is a "Full Grommet Type"
Cosworth, easier to produce=lower cost
Mazworx/PE, harder to produce= higher cost
Mazworx/PE has the VE oil hole
Both produced at the same plant (don't know for fact, but obvious by construction)
Only one of the gaskets has been proven to 60 lbs of boost and 1300hp
Mark
[email]mark@mazworx.com[/email]